# Polar

> Polar is an open-source merchant of record and billing platform aimed at developers and AI-native software companies: it acts as the legal seller so it collects, files, and remits VAT, GST, and sales tax across more than 100 markets, and it provides subscriptions with trials and proration, usage-based metering for tokens, API calls, compute, and storage, prepaid credits, seat management, hosted checkout, license keys, and framework adapters, priced from a free Starter plan at 5 percent plus 50 cents down to 3.4 percent plus 30 cents on a $400 per month Scale plan, plus surcharges for international cards, currency conversion, and payouts.

- Category: Subscription Billing (https://saastracker.org/categories/subscription-billing)
- Website: https://polar.sh
- Starting price: $0 per month on Starter at 5% plus $0.50 per transaction
- Free plan: Starter is free forever with the full merchant of record function, subscriptions, usage billing, benefits, and API access, priced at 5 percent plus 50 cents per transaction. There is no feature paywall on Starter; the paid plans buy a lower rate, not more capability.
- Free trial: No trial required; the Starter plan is free to use and you pay only per transaction
- Founded: 2023, HQ: Stockholm, Sweden, operating remote-first across Europe, Ownership: Venture-backed, independent
- Profile last reviewed: 2026-08-22
- Canonical profile: https://saastracker.org/products/polar

## Overview

Polar was founded by Birk Jernström, who previously founded Tictail and sold it to Shopify in 2018, then spent years as a director of product there. Polar launched publicly in September 2024 with an unusual premise for a payments company: build it in the open on GitHub, aim it squarely at developers, and treat billing as something you should be able to wire up in a few lines rather than a quarter-long integration project. By mid 2025 it counted roughly 16,000 developers and raised a $10M seed led by Accel with participation from Abstract and Mischief, plus an angel list that reads like a developer-tools hall of fame: Guillermo Rauch of Vercel, Paul Copplestone of Supabase, Tobi Lütke and Harley Finkelstein of Shopify, and Michael Grinich of WorkOS. Mitchell Hashimoto joined as an advisor.

The product's sharpest angle is usage-based billing for AI products. Polar meters tokens, API calls, compute, and storage, supports prepaid credit balances that deplete as usage accrues, tracks real-time gross margin per customer so you can see which users are unprofitable, and does all of this behind merchant of record status so a two-person AI startup can sell to Germany without registering for VAT. That combination, metering plus tax absorption plus a developer-grade API, is genuinely differentiated. Most merchant of record platforms treat usage billing as an afterthought and most usage-billing platforms leave tax entirely to you.

The pricing needs care, because Polar looks cheaper than it is. The free Starter plan is 5 percent plus 50 cents, identical to Paddle and Lemon Squeezy. The paid plans buy the rate down: Pro at $20 a month gets 3.8 percent plus 40 cents, Growth at $100 gets 3.6 percent plus 35 cents, and Scale at $400 gets 3.4 percent plus 30 cents. But international cards add 1.5 percent, currency conversion runs 0.25 percent in the EU up to 1 percent elsewhere, payouts cost $2 a month plus 0.25 percent and 25 cents per payout, and disputes are $15 regardless of outcome. For a business whose buyers are genuinely global, the gap to Paddle's flat all-inclusive 5 percent narrows a lot.

Polar is completely self-serve. You can sign up, create products, and start selling without speaking to anyone, the code is public, and there is a startup program giving early-stage AI companies the Scale plan free for twelve months. The counterweight is age: this is a company founded in 2024 with a $10M seed round holding your revenue and filing tax returns on your behalf, and that is a different counterparty risk profile from a decade-old company with KKR behind it.

## How it works

1. You create an organization, connect a Stripe account for payouts, and go through Polar's onboarding review. Polar is the merchant of record, so it screens what you sell before you can transact, and the payout rail underneath runs on Stripe Connect.

2. You define products in the dashboard or through the API. A product can be a one-time purchase, a recurring subscription, a seat-based plan, a metered usage product, or a credit pack, and benefits can be attached to it, such as license keys, file downloads, private GitHub repository access, or Discord role grants.

3. For usage products you send meter events from your application as customers consume tokens, API calls, compute, or storage. Polar aggregates those events against meters you define, rates them against your pricing, and either bills them in arrears at the end of the period or draws down a prepaid credit balance.

4. Customers pay through Polar's hosted checkout in localized currencies. Polar determines the buyer's jurisdiction, applies the correct VAT, GST, or sales tax, takes the payment, and is the legal seller on the invoice. It then files and remits that tax under its own registrations across more than 100 markets.

5. You integrate through a REST API, official SDKs, or framework adapters that wire checkout and webhook handling into common stacks with very little code. A customer portal lets buyers manage their own subscriptions and payment methods, and webhooks drive provisioning on your side.

6. Polar settles revenue to you on a schedule you configure, through Stripe payouts, net of its transaction fee, the international card and conversion surcharges where they apply, and the per-payout fee. Real-time cost insight reporting shows gross margin per customer, which for a usage-priced AI product is the number that decides whether you have a business.

## Best for

Developers and small AI-native software companies that bill by consumption, want a merchant of record so global VAT is somebody else's problem, and value an open-source codebase, a clean API, and framework adapters over an enterprise sales relationship. Particularly good for anyone whose pricing mixes a subscription with metered tokens or credits.

## Not the right fit for

- Businesses selling mostly to international buyers who want a single predictable rate; the 1.5 percent international card surcharge plus currency conversion plus payout fees can push the real cost close to Paddle's flat 5 percent while looking cheaper on the pricing page.
- Companies that need a decade of tax filing history behind their compliance; Polar launched publicly in September 2024 with a $10M seed, and a young company carrying your VAT liability is a real counterparty consideration however good the product is.
- B2B sellers whose revenue comes from negotiated annual contracts with procurement review and custom paper, since the merchant of record is the seller on the invoice and Polar's centre of gravity is self-serve developer checkout.
- Finance teams that need ASC 606 revenue recognition schedules, multi-entity consolidation, or audited deferred revenue reporting, none of which Polar provides.
- Anyone with a low-priced consumer product, because on the free Starter plan the 50-cent fixed fee is 5 percent of a $10 sale on top of the 5 percent rate, and buying that down requires a monthly plan fee that only pays for itself at volume.

## Features

### Merchant of record and tax

The compliance function, in more than 100 markets.

- **Legal seller of record**: Polar contracts with your buyer and issues the invoice, so the sales tax and VAT liability sits with Polar rather than with your company.
- **Global tax calculation, filing, and remittance**: Sales tax, VAT, and GST across more than 100 markets are determined at checkout, collected, filed, and paid under Polar's registrations.
- **Fraud and compliance handling**: Payment fraud screening and regulatory compliance sit with Polar as the merchant, removing most of that surface from your business.
- **Dispute handling**: Chargebacks are managed by Polar, at a documented $15 per dispute charged to you regardless of whether the dispute is won or lost.
- **Localized checkout currencies**: Buyers see and pay in their own currency, with conversion handled and charged at 0.25 percent in the EU up to 1 percent elsewhere.

### Usage-based and hybrid billing

The reason AI companies pick Polar over a generic merchant of record.

- **Usage metering**: Meter tokens, API calls, compute, and storage by sending events from your application, with meters defined and rated inside Polar rather than in your own code.
- **Prepaid credits**: Customers buy a credit balance that depletes as they consume, which is the dominant pricing model for AI products and is a first-class object here rather than a workaround.
- **Hybrid subscription plus usage**: A platform fee and metered overage can bill on the same subscription, so a base plan with included units and paid excess is expressible directly.
- **Seat-based billing with automatic proration**: Seats are managed and prorated automatically when a customer adds or removes users mid-cycle.
- **Real-time cost insights**: Gross margin is tracked per customer in real time, which for a token-priced product tells you which accounts are losing you money before the month closes.
- **Trials, upgrades, and proration**: Recurring plans support trials, plan changes, and mid-cycle proration on the same subscription object.

### Selling and digital benefits

What a buyer actually receives after paying.

- **License keys**: Generated and delivered on purchase, with API endpoints for validation and activation, so desktop and plugin developers do not build a licensing server.
- **File downloads**: Digital files are hosted and delivered as a purchase benefit, covering templates, assets, and downloadable software.
- **GitHub repository access**: Private repository access can be granted automatically as a benefit of purchase, which is unusually well suited to selling source-available software and boilerplates.
- **Discord role grants**: Paying customers can be granted a Discord role automatically, which is how a lot of developer communities gate paid tiers.
- **Hosted checkout**: A hosted, localized checkout that requires no PCI scope on your side and can be launched from a link or embedded in your own flow.
- **Customer portal**: Buyers manage their own subscriptions, payment methods, invoices, and benefits without contacting you.
- **Discounts**: Discount codes with the usual restrictions on product, redemption, and duration, applied at checkout or to an existing subscription.

### Developer experience

Where Polar is genuinely best in class.

- **Open source**: The platform is developed publicly on GitHub under the polarsource organization, which means you can read exactly how your billing works and self-host parts of the tooling.
- **Framework adapters**: Prebuilt adapters wire checkout, portal, and webhook handling into common JavaScript and Python stacks, reducing a typical integration from days to hours.
- **REST API and SDKs**: A documented API with official SDKs covering products, checkouts, subscriptions, customers, meters, benefits, and orders.
- **Webhooks**: Signed webhooks for orders, subscription lifecycle, benefit grants and revocations, and meter events, which is how provisioning is driven.
- **Sandbox environment**: A separate sandbox lets you build and test the full flow including metering and tax behavior before going live.

### Payouts and reporting

Settlement runs on Stripe, with fees you need to model.

- **Configurable payout schedule**: You choose how often revenue settles rather than accepting a fixed twice-monthly cadence, which helps working capital planning.
- **Stripe-backed payouts**: Payouts run through Stripe at $2 per month of active payouts plus 0.25 percent and 25 cents per payout, which is a fee line most competitors fold into their base rate.
- **Revenue and order reporting**: Order, subscription, and customer reporting in the dashboard and through the API, exportable for bookkeeping.
- **Startup program**: Early-stage AI startups can get the Scale plan free for twelve months, which is a $4,800 concession and materially changes the rate math for a new company.

## Use cases

- **Two-person AI startup selling API access**: Pricing is a $29 base plan with included tokens and metered overage, customers are worldwide, and nobody on the team knows what an OSS or VAT MOSS registration is. Outcome: Polar meters the tokens, bills the hybrid plan on one subscription, absorbs VAT across more than 100 markets, and the per-customer margin view shows which power users are eating the gross margin.
- **Developer selling a source-available boilerplate**: A one-time purchase that needs to grant private GitHub repository access, issue a license key, and handle tax for buyers in 30 countries. Outcome: Repository access and license keys are attached as purchase benefits and granted automatically on payment, and the seller never touches tax at all.
- **Indie SaaS founder migrating off a raw Stripe integration**: Stripe works but the founder built the subscription logic, the proration, and the customer portal by hand, and EU VAT has been quietly ignored for two years. Outcome: A framework adapter replaces the hand-rolled billing in an afternoon, the customer portal comes free, and the VAT exposure transfers to Polar going forward.
- **Community-based product gating access by Discord role**: A paid membership where the product is effectively access to a private community plus a downloadable resource library. Outcome: Subscription purchase automatically grants the Discord role and unlocks file downloads, with revocation on cancellation handled by the same benefit system.

## Pricing

Tiered plans where a monthly platform fee buys down the per-transaction merchant of record rate, plus itemized surcharges for international cards, currency conversion, payouts, and disputes.

- **Starter**: $0 per month, 5% + $0.50 per transaction. Full merchant of record with global tax filing; Subscriptions, usage metering, credits, and seats; License keys, file downloads, GitHub and Discord benefits; Hosted checkout, customer portal, API, and webhooks. Same headline rate as Paddle and Lemon Squeezy, with no monthly commitment.
- **Pro**: $20 per month, 3.8% + $0.40 per transaction. Rate reduction of 1.2 points versus Starter; Breaks even against Starter at roughly $1,700 of monthly revenue; All Starter capability included. The plan most small sellers should be on the moment they have consistent revenue.
- **Growth**: $100 per month, 3.6% + $0.35 per transaction. Rate reduction of 1.4 points versus Starter; Sensible from roughly $40,000 of monthly revenue upward; All Starter capability included.
- **Scale**: $400 per month, 3.4% + $0.30 per transaction. Lowest published rate at 3.4 percent plus 30 cents; Free for twelve months for qualifying early-stage AI startups; All Starter capability included. The startup program makes this the effective entry point for a funded AI company, which is a genuine $4,800 concession.

Add-ons:

- International card surcharge (+1.5%): Applied on non-US cards on every plan, which is the single biggest hidden cost for a global seller.
- Currency conversion (0.25% in the EU, up to 1% elsewhere): Charged on converted transactions rather than absorbed into the base rate.
- Payout fees ($2 per month plus 0.25% and $0.25 per payout): Charged through Stripe, and a line most merchant of record competitors do not charge separately.
- Disputes ($15 per dispute): Charged regardless of whether the dispute is won or lost.

Billing notes:

- Work the effective rate at both scales. At $10,000 a month with a $50 average transaction, 200 charges on the free Starter plan cost $500 plus $100, so $600 or 6.0 percent. Move to Pro at $20 a month and it is $380 plus $80 plus $20, so $480 or 4.8 percent. That is a genuine saving and the upgrade pays for itself long before you notice.
- At $100,000 a month with the same average ticket, 2,000 charges on Growth at $100 a month cost $3,600 plus $700 plus $100, so $4,400 or 4.4 percent. That is roughly 1.6 points cheaper than Paddle's flat 6.0 percent, which is about $1,600 a month.
- Now add the surcharges, because they are what close that gap. If 60 percent of your cards are non-US, the 1.5 percent international surcharge adds 0.9 points, taking the $100,000 case from 4.4 percent to about 5.3 percent. Add currency conversion at up to 1 percent on converted volume and payout fees, and a genuinely global seller can land within half a point of Paddle's all-inclusive 5 percent plus 50 cents. Polar is cheapest for sellers with US-heavy card volume, not for everyone.
- Against a billing layer on your own processor, Polar is more expensive. Chargebee Flow at 0.80 percent plus Stripe at 2.9 percent plus 30 cents is roughly 4.3 percent at $10,000 a month, but leaves the VAT registrations and filings with you. Polar's premium over that is the compliance transfer, and it is a smaller premium than the older merchant of record vendors charge.
- Transaction fees are not refunded when you refund a sale, which Polar states explicitly, so a high refund rate costs you the full fee twice over.
- The plan fee buys rate only, not features. Everything on Scale is on Starter, which means you never have to upgrade to unlock a capability, only to lower a percentage. That is an unusually honest structure.
- The startup program giving qualifying early-stage AI companies twelve months of Scale free is worth $4,800 and drops a new company straight to the best published rate, which should be checked before defaulting to Starter.

Value assessment: Polar is the best value in the merchant of record category for a developer-led company with US-weighted card volume, and its structure is admirably honest: paying more buys a lower rate, never a feature you were being denied. At $100,000 a month on Growth you land near 4.4 percent against Paddle's 6.0 percent, which is real money. The caveats are that the international card surcharge, currency conversion, and payout fees can add close to a point and a half for a genuinely global seller and erase most of the advantage, and that you are trusting a company founded in 2024 with a $10M seed to hold your revenue and file your tax returns. For usage-priced AI products it is the strongest fit in the category, because nobody else combines real metering with merchant of record status at this price. For a straightforward global consumer SaaS, model the surcharges carefully before assuming you are saving anything.

## Strengths

- The only merchant of record with genuinely first-class usage-based billing: metered tokens, API calls, compute, and storage, prepaid credit balances, and real-time per-customer gross margin.
- The pricing structure buys down a rate rather than unlocking features, so the free Starter plan is functionally complete and you upgrade for economics rather than capability.
- Best-in-category developer experience, with framework adapters, official SDKs, a public codebase on GitHub, and a sandbox that makes a full integration an afternoon rather than a sprint.
- Purchase benefits are unusually well matched to how developers sell: license keys, file downloads, private GitHub repository access, and Discord role grants, all granted and revoked automatically.
- Merchant of record coverage across more than 100 markets removes VAT registration and filing entirely, at a lower rate than the incumbent merchant of record vendors charge.
- Configurable payout schedule rather than a fixed twice-monthly cadence, which helps a small business manage cash.
- Credible backing and advice for a young company: a $10M seed led by Accel with angels from Vercel, Supabase, Shopify, and WorkOS, and Mitchell Hashimoto as an advisor.
- A startup program giving qualifying early-stage AI companies twelve months of the Scale plan free, worth $4,800 and dropping them straight to 3.4 percent plus 30 cents.

## Limitations

- The headline rate is not the whole rate. International cards add 1.5 percent, currency conversion adds up to 1 percent, and payouts carry a monthly plus per-payout fee, all of which Paddle folds into its flat number.
- The company launched publicly in September 2024 and is seed-funded, so it is a young counterparty to be holding your revenue and filing tax on your behalf across 100 markets.
- Disputes cost $15 each regardless of outcome, so a fraud wave has a direct and uncapped cost even though the liability itself sits with Polar.
- No revenue recognition module, no ASC 606 schedules, and no multi-entity consolidation, so a company approaching an audit will need accounting tooling elsewhere.
- Quoting, contract workflow, and negotiated B2B invoicing are thin; this is built for self-serve checkout, not for a sales-led motion.
- Payouts depend on a Stripe Connect account, which adds a dependency and means Stripe's own onboarding and country support constrain who can get paid.
- Leaving is as hard as leaving any merchant of record: the card credentials belong to Polar's relationship with the buyer, so an exit means re-authorizing your entire subscriber base.

## Comparisons

- **Polar vs Paddle**: Polar is cheaper on paper and often cheaper in practice for US-weighted card volume, landing near 4.4 percent at $100,000 a month on Growth against Paddle's flat 6.0 percent. But Paddle's rate is genuinely all-inclusive while Polar adds 1.5 percent on international cards plus conversion and payout fees, which can close most of the gap for a global seller. Choose Polar if you are a developer who wants metering, an open codebase, and a lower rate; choose Paddle if you want one predictable number, a decade of tax filings, and 24/7 billing support for your customers.
- **Polar vs Lemon Squeezy**: Both aim at small digital sellers, and both do license keys and hosted checkout well. Lemon Squeezy bundles more marketing machinery, including affiliates, lead magnets, and email, but it is owned by Stripe and is being positioned as a migration path to Stripe Managed Payments. Polar is independent, cheaper on paid plans, and far stronger on usage metering. If you are picking fresh in 2026, Polar's independent roadmap is the more comfortable place to build.
- **Polar vs Dodo Payments**: These two are direct rivals for the AI-native seller, both merchants of record with usage metering and license keys. Dodo is 4 percent plus 40 cents with a 0.5 percent subscription surcharge and much deeper local payment method coverage in India and emerging markets, including UPI. Polar is cheaper on paid plans, open source, and has stronger framework adapters and margin reporting. Pick Dodo if your buyers are in India or emerging markets; pick Polar if they are in the US and Europe.
- **Polar vs Creem**: Creem's flat 3.9 percent plus 40 cents with no monthly fee beats Polar's free Starter plan outright and beats Polar Pro until you are past a few thousand dollars a month. Polar is the more capable product, with real usage metering, credits, per-customer margin, GitHub and Discord benefits, and an open codebase. Take Creem if you want the simplest low rate for straightforward subscription or one-time sales; take Polar if your pricing is consumption-based or your product needs those benefit grants.
- **Polar vs Outseta**: Outseta is a bundle of billing plus authentication, CRM, email, and help desk on your own Stripe account, from $47 a month plus 2 percent, and it leaves you as merchant of record with the tax liability. Polar takes the tax liability away but gives you only billing. If you are a non-technical founder assembling a membership business who wants one vendor for the whole customer stack, Outseta wins. If you are a developer who already has auth and support and just wants global selling handled, Polar wins.

## Implementation

- Setup time: Hours for the integration if you use a framework adapter, plus an onboarding review before you can transact. The adapters and SDKs are genuinely the fastest path to a working paid product in this category, but Polar screens sellers because it carries the liability, and payouts require a connected Stripe account.
- Learning curve: Low for developers, higher for everyone else. The API and documentation are excellent and the concepts map cleanly onto how software engineers think. Usage metering requires a deliberate design decision about what events you emit and how meters aggregate them, and getting that wrong is the most common source of billing disputes on any consumption-priced product.
- Onboarding: Fully self-serve with no sales call, a public codebase, a sandbox, and open documentation. Early-stage AI startups should apply to the startup program before configuring billing, since it changes the rate immediately.
- Migration: Coming from a raw Stripe integration, Polar is a rewrite of your billing logic rather than a lift and shift, but the framework adapters make that a short project and you gain a customer portal and tax compliance you did not have. Coming from another merchant of record, you face the standard problem: card credentials belong to the outgoing vendor's relationship with the buyer and do not transfer, so plan a re-authorization campaign. Going the other direction is the same, so export orders, subscriptions, customers, and meter data on a schedule from day one and treat the open codebase as insurance rather than an exit route, since your customers' payment methods are not in it.

## Platform, API & security

- Platforms: Hosted checkout, Customer portal, REST API, Official SDKs, Framework adapters for common JavaScript and Python stacks, Webhooks, Sandbox environment, Open-source codebase on GitHub
- API: A documented REST API with official SDKs covering products, prices, checkouts, subscriptions, customers, orders, meters, credits, and benefits, plus signed webhooks for the full lifecycle. Framework adapters wrap checkout, portal, and webhook verification so a working integration is a handful of lines rather than a custom build.
- Compliance: PCI DSS via Stripe infrastructure, GDPR, Global VAT, GST, and sales tax registration as merchant of record across 100-plus markets
- Data residency: Not published as a configurable option; the platform is operated centrally with EU and US customers served from the same infrastructure.
- SSO: Not published as a seller-facing dashboard feature.
- Security notes: Card data never touches your servers because Polar is the merchant, which keeps you out of PCI scope. Payment rails and payouts run on Stripe infrastructure. The platform is developed in the open on GitHub, which is unusual for a payments company and means the billing logic your revenue depends on is auditable rather than opaque.

## Support

- Channels: Email support, Public GitHub issues and discussions, Community channels for developers
- Documentation: Extensive developer documentation at polar.sh/docs covering the merchant of record model, fee schedule, products, benefits, usage meters, credits, checkout, the customer portal, framework adapters, and the API reference.
- Community: An active open-source community around the polarsource GitHub organization, which is also where roadmap discussion and bug reports happen in public.

## Company

- Founded: 2023
- Founders: Birk Jernström
- Headquarters: Stockholm, Sweden, operating remote-first across Europe
- Ownership: Venture-backed, independent
- Employees: Small team, not publicly disclosed
- Funding: Raised a $10M seed round led by Accel in June 2025, with continued backing from Abstract and Mischief and angel investment from Guillermo Rauch, Paul Copplestone, Tobi Lütke, Harley Finkelstein, and Michael Grinich. Mitchell Hashimoto is an advisor.

Funding history:

- Seed (2025): $10M. Led by Accel with Abstract and Mischief participating, alongside angels from Vercel, Supabase, Shopify, and WorkOS. Roughly 16,000 developers on the platform at the time.

Timeline:

- 2023: Founded by Birk Jernström, previously founder of Tictail which Shopify acquired in 2018 and where he later served as a director of product.
- 2024: Launches publicly in September as an open-source merchant of record billing engine aimed at developers, developed in the open on GitHub.
- 2025: Raises a $10M seed led by Accel with roughly 16,000 developers on the platform, backed by angels from Vercel, Supabase, Shopify, and WorkOS.
- 2025: Expands into usage-based billing for AI products with metering, prepaid credits, seat management, and real-time per-customer margin reporting.
- 2026: Restructures pricing into Starter, Pro, Growth, and Scale plans where a monthly fee buys down the transaction rate from 5 percent plus 50 cents to 3.4 percent plus 30 cents.

## Integrations

Stripe for payment rails and payouts, GitHub for private repository access as a purchase benefit, Discord for role grants on purchase, Framework adapters for common JavaScript and Python stacks, Webhooks to any internal system, Official SDKs across multiple languages, License key validation API

## FAQ

### What is Polar?

Polar is an open-source merchant of record and billing platform for developers. It becomes the legal seller of your product so it collects, files, and remits VAT, GST, and sales tax across more than 100 markets, and it provides subscriptions, usage-based metering, prepaid credits, seat billing, hosted checkout, a customer portal, and purchase benefits like license keys and private GitHub access. It was founded by Birk Jernström, who previously sold Tictail to Shopify, and launched publicly in September 2024.

### Is Polar really the merchant of record, and what does that mean for my tax liability?

Yes. Polar contracts with your buyer, issues the invoice from its own entity, and holds the sales tax registrations. That means the liability for calculating, collecting, filing, and remitting VAT and sales tax across more than 100 markets is Polar's, not yours. Your company's tax position becomes a single relationship with one vendor rather than a set of foreign registration thresholds you have to monitor.

### What does Polar actually cost once every fee is counted?

The base rate ranges from 5 percent plus 50 cents on the free Starter plan down to 3.4 percent plus 30 cents on the $400 per month Scale plan. On top of that: 1.5 percent on international cards, 0.25 percent in the EU up to 1 percent elsewhere for currency conversion, $2 a month plus 0.25 percent and 25 cents per payout, and $15 per dispute regardless of outcome. At $100,000 a month with a $50 average ticket on Growth, the base cost is about 4.4 percent, but a mostly non-US card mix pushes that toward 5.3 percent.

### How does Polar compare with paying Paddle 5 percent flat?

For US-weighted card volume, Polar is meaningfully cheaper: 4.4 percent versus 6.0 percent at $100,000 a month is about $1,600 saved. For a genuinely global seller with mostly international cards and multi-currency conversion, the surcharges can bring Polar within half a point of Paddle, at which point Paddle's decade of tax filings, chargeback defense, and 24/7 customer billing support look like better value. Model your actual card mix rather than the headline rates.

### Does Polar handle usage-based and hybrid pricing?

This is its strongest area. You send meter events from your application for tokens, API calls, compute, or storage, define meters and rating in Polar, and bill either in arrears or by depleting a prepaid credit balance. A base subscription and metered overage can sit on the same subscription, seats prorate automatically, and real-time cost insights show gross margin per customer, which is the number that decides whether a token-priced product is actually profitable.

### What happens to failed payments and card expiries?

Polar runs recovery on failed subscription payments through its payment infrastructure and manages the dispute process as the merchant of record. Dunning is present rather than being the centerpiece: this is not a product built around a sophisticated retry engine the way a dedicated recovery-focused platform is, so if involuntary churn is your primary problem you should compare it directly against a billing platform with a machine-learning retry engine.

### Do I have to upgrade a plan to unlock features?

No, and this is one of the more honest structures in the category. Starter, Pro, Growth, and Scale all include the same capability set. The monthly fee buys a lower transaction rate, nothing else. Pro at $20 a month pays for itself against Starter at roughly $1,700 of monthly revenue, so the upgrade decision is arithmetic rather than a feature negotiation.

### When and how do I get paid?

Payouts settle through a connected Stripe account on a schedule you configure, which is more flexible than the fixed twice-monthly cadence some merchant of record competitors use. The cost is $2 per month of active payouts plus 0.25 percent and 25 cents per payout, charged separately rather than folded into the base rate. The Stripe dependency also means Stripe's supported payout countries constrain where you can receive money.

### How hard is it to leave Polar, and is my card data portable?

As hard as leaving any merchant of record, which is to say hard. Because Polar is the legal seller, stored payment credentials belong to its relationship with your buyer and cannot simply be handed to you or another vendor. A migration means asking every active subscriber to re-enter a card, with real attrition. The open-source codebase does not change this: the code is portable, the customer payment methods are not. Export orders, subscriptions, customers, and meter data regularly.

### Can I use Polar for a B2B business selling annual contracts?

Only awkwardly. Polar can bill annual subscriptions and issue invoices, but the platform is built around self-serve developer checkout, not a sales-led motion with quotes, redlined contracts, and net-60 payment terms. There is also the structural issue common to all merchants of record: the invoice comes from Polar, and a procurement team expecting to contract with your company directly may object.

### Does Polar do revenue recognition and accounting exports?

Exports yes, revenue recognition no. You get order, subscription, and customer reporting through the dashboard and API, which a bookkeeper can use to reconcile payouts back to underlying sales. There is no ASC 606 or IFRS 15 revenue recognition module, no deferred revenue scheduling, and no multi-entity consolidation, so a company approaching an audit will need separate accounting tooling.

### Is Polar safe to build on given how young it is?

That is the fair question. It launched publicly in September 2024 and has raised a single $10M seed, so it is a young company holding your revenue and filing tax returns across 100 markets. The mitigating factors are a founder who previously built and sold Tictail to Shopify, backing from Accel, angels from Vercel, Supabase, Shopify, and WorkOS, and a codebase that is public rather than opaque. It is a reasonable bet for a small company and a harder one for a business where a payments interruption would be existential.

## Editorial verdict

Polar is the best merchant of record for developers, and by some distance the best one for anything priced by consumption. Real usage metering, prepaid credits, per-customer gross margin, purchase benefits that grant GitHub and Discord access, framework adapters that make integration an afternoon, and a public codebase add up to a product that feels built by people who have actually shipped software for money. The pricing structure is honest, since the monthly fee buys a rate rather than unlocking features you were being denied. Two things temper the recommendation. The headline rate is not the whole rate, and a seller with mostly international cards should model the 1.5 percent surcharge, conversion, and payout fees before assuming a saving over Paddle's flat number. And this is a company founded in 2024 on a single seed round carrying your VAT liability, which is a different bet from a decade-old vendor with institutional backing. For an AI-native startup, especially one that qualifies for twelve free months of Scale, it is the strongest option in the category. For a business where a payments outage would be fatal, weigh the counterparty question honestly.

## SaaSTracker awards

- Momentum (Subscription Billing, Summer 2026): "An open-source merchant of record built for developers who bill by the token, growing as fast as the AI products it bills."

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Source: SaaSTracker (https://saastracker.org), an independent editorial project. This profile is compiled from public information, carries no peer reviews or paid placement, and was last reviewed 2026-08-22. Awards are judged on published criteria: https://saastracker.org/methodology